Posts under App & System Services topic

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NSFileProviderReplicatedExtension does not work in Shared iPad setup
Can be reproduced with a shared iPad setup (https://support.apple.com/de-de/guide/deployment/dep9a34c2ba2/web) and the example app provided by Apple (https://developer.apple.com/documentation/fileprovider/synchronizing-files-using-file-provider-extensions). The issue is that when using the File Provider extension implemented with 'NSFileProviderReplicatedExtension', the content of the share does not display in the iPadOS Files app. The 'NSFileProviderEnumerating.enumerator' function is invoked, but none of the functions of the returned 'NSFileProviderEnumerator' are executed: neither 'currentSyncAnchor', 'enumerateChanges', nor 'enumerateItems'. Instead, the 'NSFileProviderEnumerator' is immediately invalidated. This issue can be reproduced with iPadOS 18.3 and a shared iPad setup. Maybe i missing some additional steps/ settings in my extension to work properly on Shared iPads. Created also a post on the feedbackassistent: FB16587660 (NSFileProviderReplicatedExtension does not work in Shared iPad setup) Steps to reproduce: iPad with a Shared iPad profile Enroll the iPad and log in as a Guest user Turn on developer mode Install the example app from Apple (as mentioned above) Add some test files to the FruitBasket storage Add this FruitBasket domain to the FruitBasket-iOS app You may need to provide "Privacy - Local Network Usage Description" in the Info.plist of the FruitBasket-iOS example app to be able to find local FruitBasket storage. Check in the Files app to see that the FruitBasket share is empty -> The expected behavior is that the FruitBasket share should contain the test files added previously. (This works fine without a shared iPad setup).
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189
Mar ’25
Apple Pay SDK JS version policy
What is the version policy for the Apple Pay SDK Javascript ? The documentation refers to this link : https://applepay.cdn-apple.com/jsapi/1.latest/apple-pay-sdk.js The future updates will overrride the file on that link ? Is there a way to be notified of any changes ? We are using a previous version named v1 : https://applepay.cdn-apple.com/jsapi/v1/apple-pay-sdk.js What are the risks not using changing to the lastesdt link ? Thank you for your help.
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219
Mar ’25
CardSession error handling with respond method
Hello, in the sample code found in the Apple CardSession documentation, there are commented line in the APDU respond method: case .received(let cardAPDU): do { /// Call handler to process received input and produce a response. let responseAPDU = ProcessAPDU(cardAPDU.payload) try await cardAPDU.respond(response: responseAPDU) } catch { /// Handle the error from respond(response:). If the error is /// CardSession.Error.transmissionError, then retry by calling /// CardSession.APDU.respond(response:) again. } in the catch part, it says that we should handle the error from respond and retry in case of transmission error, how can we achieve that ? How can we check the error ? Could you give a sample code for that ? best regards
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202
Mar ’25
CoreBluetooth and Swift strict concurrency checking
As of iOS 18.3 SDK, Core Bluetooth is still mostly an Objective-C framework: key objects like CBPeripheral inherit from NSObjectProtocol and does not conform to Sendable. CBCentralManager has a convenience initializer that allows the caller to provide a dispatch_queue for delegate callbacks. I want my Swift package that implements Core Bluetooth to conform to Swift 6 strict concurrency checking. It is unsafe to dispatch the delegate events onto my own actor, as the passed in objects are presumably not thread-safe. What is the recommended concurrency safe way to implement Core Bluetooth in Swift 6 with strict concurrency checking enabled?
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151
Mar ’25
What are the criteria for CLVisit in CoreLocation?
There is no official documentation specifying the exact criteria for determining a CLVisit. For example, if a user starts at a target location, will the following method be called? func locationManager(_ manager: CLLocationManager, didVisit visit: CLVisit) This did not work during my testing. It was only successfully triggered when starting from a distant location and arriving at the target point. It would be helpful to know the exact conditions, such as how long a user must stay at a location for it to be considered a visit. Are there any specific thresholds (e.g., minimum duration, distance moved) that determine when this method is triggered?
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208
Mar ’25
how can i get the LiveCommunicationKit events
i have codes looks like: import UIKit import LiveCommunicationKit @available(iOS 17.4, *) class LiveCallKit: NSObject, ConversationManagerDelegate { @available(iOS 17.4, *) func conversationManager(_ manager: ConversationManager, conversationChanged conversation: Conversation) { } @available(iOS 17.4, *) func conversationManagerDidBegin(_ manager: ConversationManager) { } @available(iOS 17.4, *) func conversationManagerDidReset(_ manager: ConversationManager) { } @available(iOS 17.4, *) func conversationManager(_ manager: ConversationManager, perform action: ConversationAction) { } @available(iOS 17.4, *) func conversationManager(_ manager: ConversationManager, timedOutPerforming action: ConversationAction) { } @available(iOS 17.4, *) func conversationManager(_ manager: ConversationManager, didActivate audioSession: AVAudioSession) { } @available(iOS 17.4, *) func conversationManager(_ manager: ConversationManager, didDeactivate audioSession: AVAudioSession) { } @objc public enum InterfaceKind : Int, Sendable, Codable, Hashable { /// 拒绝/挂断 case reject /// 接听. case answer } var sessoin: ConversationManager var callId: UUID var completionHandler: ((_ actionType: InterfaceKind,_ payload: [AnyHashable : Any]) -> Void)? var payload: [AnyHashable : Any]? @objc init(icon: UIImage!) { let data:Data = icon.pngData()!; let cfg: ConversationManager.Configuration = ConversationManager.Configuration(ringtoneName: "ring.mp3", iconTemplateImageData: data, maximumConversationGroups: 1, maximumConversationsPerConversationGroup: 1, includesConversationInRecents: false, supportsVideo: false, supportedHandleTypes: Set([Handle.Kind.generic])) self.sessoin = ConversationManager(configuration: cfg) self.callId = UUID() super.init() self.sessoin.delegate = self } @objc func toIncoming(_ payload: [AnyHashable : Any], displayName: String,actBlock: @escaping(_ actionType: InterfaceKind,_ payload: [AnyHashable : Any])->Void) async { self.completionHandler = actBlock do { self.payload = payload self.callId = UUID() var update = Conversation.Update(members: [Handle(type: .generic, value: displayName, displayName: displayName)]) let actNumber = Handle(type: .generic, value: displayName, displayName: displayName) update.activeRemoteMembers = Set([actNumber]) update.localMember = Handle(type: .generic, value: displayName, displayName: displayName); update.capabilities = [ .playingTones ]; try await self.sessoin.reportNewIncomingConversation(uuid: self.callId, update: update) try await Task.sleep(nanoseconds: 2000000000); } catch { } } } i want to listen the button event,but i can't find the solutions!please give me a code demo
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205
Mar ’25
Location Permission Management for Parental Control Apps with Screen Time Authorization
Apple Feedback Ticket: FB16804936 Background We develop a parental control application called Adora Kids (https://apps.apple.com/us/app/adora-kids/id6443787669) that requires "Location Always" permission to function properly. Our app has Screen Time authorization and provides monitoring services for parents. Issue We are experiencing a recurring problem where child users receive the system notification "Adora accessed your location in the background" every few days. This frequently results in children disabling location permissions, which prevents our app from functioning as intended. Current Approach and Limitations We have explored using Content & Privacy Restrictions for Location Services as a potential solution, but have encountered two significant limitations: These restrictions cannot be accessed programmatically via the ManagedSettings framework (unlike AppStoreSettings and other restrictions). The current implementation is "all-or-nothing" - enabling location restrictions blocks permission changes for ALL apps on the device, preventing children from granting legitimate location access to other applications. Questions Is there a way to programmatically access and manage Content & Privacy Restrictions for Location Services through the ManagedSettings framework that we might have overlooked? Are there any recommended approaches for apps with Screen Time authorization to prevent users from changing specific permissions (particularly location) while still allowing them to manage permissions for other apps? Does Apple have plans to implement app-specific permission locking for apps with Screen Time authorization in future iOS releases? Are there any alternative approaches or workarounds that other developers have successfully implemented for this use case? Any guidance from the developer community or Apple engineers would be greatly appreciated. This is a critical functionality issue affecting the reliability of our parental control service. Thank you in advance for your assistance.
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328
Mar ’25
macOS + ARM + USB/C to get VCP code from external monitor via IOAVServiceReadI2C
Good morning, I'm encountering reliability issues with DDC/CI communication when using USB-C connection. Initially using ddc-hi (which uses this package), I ran into several issues that I've partially resolved but still need help addressing. Environment OS: macOS Display Connection: USB-C for _ in 1 ... (numOfRetryAttemps ?? 4) + 1 { for _ in 1 ... max((numOfWriteCycles ?? 2) + 0, 1) { usleep(writeSleepTime ?? 10000) success = IOAVServiceWriteI2C(service, UInt32(ARM64_DDC_7BIT_ADDRESS), UInt32(dataAddress), &packet, UInt32(packet.count)) == 0 } if !reply.isEmpty { usleep(readSleepTime ?? 50000) if IOAVServiceReadI2C(service, UInt32(ARM64_DDC_7BIT_ADDRESS), 0, &reply, UInt32(reply.count)) == 0 { success = self.checksum(chk: 0x50, data: &reply, start: 0, end: reply.count - 2) == reply[reply.count - 1] } } if success { return success } usleep(retrySleepTime ?? 20000) } The result from IOAVServiceReadI2C is not reliable in some cases. Do we have any other API to get VCP code from monitor like Intel version done. The previous APIs weren’t working anymore on the M1 GPU, the IOFramebuffer was now an IOMobileFramebuffer and the IOI2C* functions weren’t doing anything.
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310
Mar ’25
New features for APNs token authentication now available
Team-scoped keys introduce the ability to restrict your token authentication keys to either development or production environments. Topic-specific keys in addition to environment isolation allow you to associate each key with a specific Bundle ID streamlining key management. For detailed instructions on accessing these features, read our updated documentation on establishing a token-based connection to APNs.
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1.8k
Feb ’25
iOS Phone app bug: Long verdict text incorrectly truncated on call details screen
I've discovered a bug in the Phone app on iOS related to how long verdicts are displayed. When a call is identified by a third-party Caller ID app, long verdicts display correctly during the call (they auto-scroll) and in the call log (with an ellipsis at the end). However, on the call details screen, the text is strangely truncated - showing only the beginning of the string and the last word. For testing, I used this verdict: "Musclemen grow on trees. They can tense their muscles and look good in a mirror. So what? I'm interested in practical strength that's going to help me run, jump, twist, punch." I'll attach a screenshots demonstrating the problem:
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298
Mar ’25
MacOS 15.3: Unable to get IOUSBDeviceInterface object when IOKit notification is received for USB Device connection for USB Device monitoring.
Our product is using IOKit framework for monitoring USB device activities. We have used IOKit framework for getting the notification for USB plugin and un-plugins. With the macOS version 15.3 we are started seeing issue with it. When the notification is received during USB plugin/connection, we are unable to get IOUSBDeviceInterface object which will be used for further processing. Currently we are seeing the below error every time, while trying to create the IO plugin interface using IOCreatePlugInInterfaceForService API:
 create plugin Error: (0xe00002be): (iokit/common) resource shortage Due to this the we are unable to proceed with the flow further and the entire flow is broken. These logics work fine in macOS version 15.2 and lower versions without any issues. logic used: USBDevice::initInterfaceInterfaceByIOService(io_service_t entry) { IOCFPlugInInterface** plugInInterface = NULL; IOUSBInterfaceInterface** interface = NULL; SInt32 score = 0; mach_error_code err = IOCreatePlugInInterfaceForService(entry, kIOUSBInterfaceUserClientTypeID, kIOCFPlugInInterfaceID, &plugInInterface, &score); if ((err != 0) || (!plugInInterface)) { os_log_error(OS_LOG_DEFAULT, "Unable to create plugin \n"); return nullptr; } auto result = (*plugInInterface)->QueryInterface(plugInInterface, CFUUIDGetUUIDBytes(kIOUSBInterfaceInterfaceID), (LPVOID*)&interface); (*plugInInterface)->Release(plugInInterface); if (result || !interface) { os_log_error(OS_LOG_DEFAULT, "Unable to create interface \n"); return nullptr; } return interface; }
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573
Feb ’25
iPad widget bug
Widgets on the widget is not responding to the touch properly. This issue is also affecting within the home screen widget in a way that the widget switches to light mode by itself even though I am in dark mode. Additionally, lock screen does not to respond once the lock screen widget has been edited. Is anyone else having this issue?
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187
Mar ’25
Apple wallet pass nfc enable
on a span of 4 months we sent 2 for nfc entitlement requests and refused , no reason nothing . i mean all we want is the ability to use nfc on passes nothing else , no idea why this is so complex . with google you don’t even need a developer account and it’s for free , here we pay and we can’t even get the full functionality the passes offer , we got the hardware and the solution but we find out we need an nfc entitlement to allow passes to have nfc ? i mean our use case is very simple instead of having barcode on the passes we want them to be via nfc and we already got the nfc hardware but we find out we need nfc entitlement which we tried requesting but getting refused with no reason at all. at least tell u what is the problem what how to fix it not outright refuse without any reason at all. if anyone got any solution please provide.
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229
Feb ’25
Why can't the app get the subscription status occasionally?
Hi, I have developed an app which has two in-app purchase subscriptions. During the test, the app can successfully get the status of the subscriptions. After it's released, I downloaded it from app store and subscribed it with my apple account. I found that in most cases, the app can identify that I have subscribed it and I can use its all functions. But yesterday, when I launched it again, it showed the warning that I haven't subscribed it. I checked my subscription in my account and the subscription status hasn't been changed, that is, I have subscribed it. And after one hour, I launched it again. This time the app identified that I have subscribed it. Why? The following is the code about listening to the subscription status. Is there any wrong about it? HomeView() .onAppear(){ Task { await getSubscriptionStatus() } } func getSubscriptionStatus() async { var storeProducts = [Product]() do { let productIds = ["6740017137","6740017138"] storeProducts = try await Product.products(for: productIds) } catch { print("Failed product request: \(error)") } guard let subscription1 = storeProducts.first?.subscription else { // Not a subscription return } do { let statuses = try await subscription1.status for status in statuses { let info = try checkVerified(status.renewalInfo) switch status.state { case .subscribed: if info.willAutoRenew { purchaseStatus1 = true debugPrint("getSubscriptionStatus user subscription is active.") } else { purchaseStatus1 = false debugPrint("getSubscriptionStatus user subscription is expiring.") } case .inBillingRetryPeriod: debugPrint("getSubscriptionStatus user subscription is in billing retry period.") purchaseStatus1 = false case .inGracePeriod: debugPrint("getSubscriptionStatus user subscription is in grace period.") purchaseStatus1 = false case .expired: debugPrint("getSubscriptionStatus user subscription is expired.") purchaseStatus1 = false case .revoked: debugPrint("getSubscriptionStatus user subscription was revoked.") purchaseStatus1 = false default: fatalError("getSubscriptionStatus WARNING STATE NOT CONSIDERED.") } } } catch { // do nothing } guard let subscription2 = storeProducts.last?.subscription else { // Not a subscription return } do { let statuses = try await subscription2.status for status in statuses { let info = try checkVerified(status.renewalInfo) switch status.state { case .subscribed: if info.willAutoRenew { purchaseStatus2 = true debugPrint("getSubscriptionStatus user subscription is active.") } else { purchaseStatus2 = false debugPrint("getSubscriptionStatus user subscription is expiring.") } case .inBillingRetryPeriod: debugPrint("getSubscriptionStatus user subscription is in billing retry period.") purchaseStatus2 = false case .inGracePeriod: debugPrint("getSubscriptionStatus user subscription is in grace period.") purchaseStatus2 = false case .expired: debugPrint("getSubscriptionStatus user subscription is expired.") purchaseStatus2 = false case .revoked: debugPrint("getSubscriptionStatus user subscription was revoked.") purchaseStatus2 = false default: fatalError("getSubscriptionStatus WARNING STATE NOT CONSIDERED.") } } } catch { // do nothing } if purchaseStatus1 == true || purchaseStatus2 == true { purchaseStatus = true } else if purchaseStatus1 == false && purchaseStatus2 == false { purchaseStatus = false } return }
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212
Mar ’25
How to check for cancellation of background task
When using the old withTaskCancellationHandler(operation:onCancel:isolation:) to run background tasks, you were notified that the background task gets cancelled via the handler being called. SwiftUI provides the backgroundTask(_:action:) modifier which looks quite handy. However how can I check if the background task will be cancelled to avoid being terminated by the system? I have tried to check that via Task.isCancelled but this always returns false no matter what. Is this not possible when using the modifier in which case I should file a bug report? Thanks for your help
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292
Mar ’25
Matter code to control a device?
I would like to explore developing apps to integrate with Matter, but it seems that there are limited code examples available. To start with I would like to create a MacOs or iOS application to control a Matter device like a light bulb. I would as an example just like to know how to turn the light on or off. Where should I start?
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171
Mar ’25
CarPlay style API
Is there any way I can get updates when I change CarPlay style settings? I've tried CPSessionConfigurationDelegate.contentStyleChanged and CPTemplateApplicationSceneDelegate.contentStyleDidChange, but they always produce the same result. When I choose: Automatic -> I receive light in case of daylight; Always Dark and Always Show Dark Map toggle on -> dark Always Dark and Always Show Dark Map toggle off -> light. But it seems to be wrong, b/c CarPlay's toolbar is still dark, and I receive light. Is there a way to get a dark style when choosing Always Dark and Always Show Dark Map toggle off? Or at least get updates when the Always Show Dark Map toggle changes?
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317
Feb ’25